🐛 should not change currentScript if it not configurable (#1470)

src/sandbox/patchers/dynamicAppend/common.ts

@@ -219,12 +219,18 @@ function getOverwrittenAppendChildOrInsertBefore(opts: {
               fetch,
               strictGlobal,
               beforeExec: () => {
+                const isCurrentScriptConfigurable = () => {
+                  const descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript');
+                  return !descriptor || descriptor.configurable;
+                };
+                if (isCurrentScriptConfigurable()) {
                   Object.defineProperty(document, 'currentScript', {
                     get(): any {
                       return element;
                     },
                     configurable: true,
                   });
+                }
               },
               success: () => {
                 manualInvokeElementOnLoad(element);